Lightroom, yes. It's pretty easy to use. It does NOT alter your original raw files, so the .NEFs stay unmanipulated. What Lighroom does do however, is it makes a series of commands that tell the application "how to view" the image data. These changes can be saved in the same folder as the .NEFs in the form of .xmp files, which are often referred to as "sidecar files". These are very small instruction sets, around 4k. The other option is to have the changes written to the Lightroom catalog's database.
In Lightroom, you "Import" the images, and it makes preview images from the raw data. Then, you edit and or adjust the images. When you're satisfied, you can select from one image, up to all of the images in that folder, and "Export" the files, to make .JPGs or .TIFFs or whatever, so that you have finished, completed, ready-to-use files that are free-standing and appear the same way in multiple environments.
Lightroom is a simple, affordable, reliable image editing AND cataloging application software program. It is without a doubt, worth every penny it costs.